PTPN2 rs1893217 IBD 风险等位基因增加了由 JAK-STAT-CEACAM6 轴对 AIEC 侵入的易感性
Pritha Chatterjee1, Vinicius Canale1, Stephanie J King1
1Division of Biomedical Sciences, University of California, Riverside, Riverside, CA, USA.
Gut microbes
|July 7, 2025
概括
蛋白氨酸酸酶2型 (PTPN2) 活性的丧失通过提高CEACAM6表达,增加了肠道病原体附着侵入性大肠杆菌 (AIEC) 的入侵. 雅克抑制剂可能会减少炎症性肠病 (IBD) 患者的AIEC殖民.
科学领域:
- 胃肠病学 胃肠病学
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
背景情况:
- 炎症性肠病 (IBD) 与肠道失调有关,包括病原体附着侵入性大肠杆菌 (AIEC) 的扩张.
- IBD易感性基因蛋白氨酸酸酶2型 (PTPN2) 通常会限制AIEC的扩张.
- AIEC利用宿主细胞表面糖蛋白CEACAM6进行肠上皮细胞 (IEC) 侵入.
研究的目的:
- 调查IEC特定PTPN2限制AIEC入侵的机制.
- 确定PTPN2在调节CEACAM6表达和AIEC坚持/入侵中的作用.
主要方法:
- 来自不同PTPN2单核酸多态 (SNP) 基因型的IBD患者的肠道活检的分析.
- 使用CRISPR-Cas9基因编辑和shRNA生成PTPN2缺乏和PTPN2失败的人类肠上皮细胞系.
- 使用AIEC菌株进行粘附和入侵测定,随后进行蛋白质表达分析 (西式涂抹) 和JAK-STAT信号询问.
主要成果:
- 患有PTPN2 rs1893217 SNP的IBD患者表现出CEACAM6表达的升高.
- 缺乏PTPN2的IEC显示出明显更高的CEACAM6水平和增加的AIEC入侵.
- IL-6进一步提高了PTPN2缺乏细胞中的CEACAM6的调节,而JAK抑制 (托法西替尼) 减少了CEACAM6和AIEC入侵.
结论:
- PTPN2在限制AIEC进入肠道上皮细胞方面发挥着关键作用.
- 在PTPN2缺乏细胞中CEACAM6表达升高促进AIEC殖民.
- 雅克抑制剂代表了一种潜在的治疗策略,用于减轻IBD易感个体的AIEC.
关键词:
AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIEC AIECIBD IBD IBD IBD IBD IBD IBD IBD IBD IBD IBD IBD IBD IBD IBD IBD这就是JAK-STAT.第82章 没有了肠道屏障障碍物 肠道屏障障碍物托法西提尼布 (tofacitinib) 是一种更多相关视频
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